From: legg@nospam.magma.ca   
      
   On Mon, 26 Sep 2022 06:03:06 +1000, Trevor Wilson   
    wrote:   
      
   >I have a Meyer Sound 833 control unit on my bench. It has a weird fault   
   >that appears to centre around a 15kHz oscillation that affects one   
   >channel, directly, but is bleeding through to the other channel.   
   >   
   >Meyer Sound refuses to supply a schematic. They will repair it for a set   
   >charge of US$592.50 (nice round figure). That's a bitter pill to   
   >swallow, but it gets worse. I (and my customer) are here in Australia   
   >and I figure on the freight charges to blow that figure out to around   
   >US$1,000.00 or so.   
   >   
   >I am hopeful that someone has some experience with this product. Maybe   
   >even schematics.   
   >   
   >TIA   
   >   
   >Trevor Wilson   
      
   You can start by trying to locate the source w/r to different   
   gain settings in the signal chain.   
      
   So how can you make it worse, first. Then you can concentrate on   
   smaller sections of the circuitry, without the schematic.   
      
   You seem to be happy running without that specific channel -   
   complainibg about feed-through only - so just killing   
   the section may be enough of a fix to satisfy your customer,   
   if you can't cure the actual local fault.   
      
   RL   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)